Apparatus for purifying exhaust gas

Details Apparatus for purifying exhaust gas Apparatus for purifying exhaust gas

1976-11-30

1978-09-05

Burns, Wendell E.

Power plants

Internal combustion engine with treatment or handling of...

Having means analyzing composition of exhaust gas

60301, 123119D, 123119EC, 123124R, F02D 7510, F07D 3500, F02M 700

Patent

active

041109783

ABSTRACT:
An apparatus for purifying an exhaust gas on the basis of a single three-functional catalyst capable of oxidizing hydrocarbons and carbon monoxide, and simultaneously reducing nitrogen oxides, where a fuel-controlling means is provided for dividing driving conditions into an accelerating stage as zone I, a steady running stage as zone II, and a slowing-down and idling stage as zone III, and controlling an air-fuel mixture to be fed from a carburetor to a reducing state of the three-functional catalyst in zone I, a three-functional state in zone II, and an oxidizing state in zone III.

REFERENCES:
patent: 3287899 (1966-11-01), Bintz
patent: 3824788 (1974-07-01), Cole et al.
patent: 4036186 (1977-07-01), Hattori et al.
patent: 4057042 (1977-11-01), Aono

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